//
//  SHDiscoverSearchView.swift
//  三期微博1
//
//  Created by TownFish on 16/7/28.
//  Copyright © 2016年 TownFish. All rights reserved.
//

import UIKit

class SHDiscoverSearchView: UIView {
    override init(frame: CGRect) {
        super.init(frame: CGRect(x: 0, y: 0, width: SCREENW, height: 35))
        setupUI()
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    //MARK: - 监听方法
    func buttonClick() {
        //更新约束
        self.textField.snp_updateConstraints { (make) -> Void in
            make.trailing.equalTo(self)
        }
//        UIView.animateWithDuration(0.25) { () -> Void in
//            self.layoutIfNeeded()
//        }
        UIView.animateWithDuration(0.25, animations: { () -> Void in
            self.layoutIfNeeded()
            }) { (_) -> Void in
                self.textField.resignFirstResponder()
        }
    }
    
    
    
    //MARK: - 设置视图
    private func setupUI() {
        backgroundColor = RandomColor()
        //添加控件
        addSubview(cancelButton)
        addSubview(textField)
        
        //添加约束
        cancelButton.snp_makeConstraints { (make) -> Void in
            make.width.equalTo(50)
            make.top.bottom.trailing.equalTo(self)
        }
        textField.snp_makeConstraints { (make) -> Void in
            make.top.leading.bottom.equalTo(self)
            make.trailing.equalTo(self)
        }
        
    }
    
    //MARK: - 懒加载控件
    //取消按钮
    private lazy var cancelButton: UIButton = {
        let button = UIButton()
        //添加点击事件
        button.addTarget(self, action: "buttonClick", forControlEvents: UIControlEvents.TouchUpInside)
        button.setTitle("取消", forState: UIControlState.Normal)
        button.setTitleColor(ThemeColor, forState: UIControlState.Normal)
        button.titleLabel?.font = UIFont.systemFontOfSize(15)
        return button
    }()
    
    //输入框
    private lazy var textField: UITextField = {
        let img = UIImageView(imgName: "searchbar_textfield_search_icon")
        img.contentMode = .Center
        img.frame.size = CGSize(width: 35, height: 35)
        let txt = UITextField()
        txt.layer.borderColor = ThemeColor.CGColor
        txt.layer.borderWidth = 2
        txt.placeholder = "上海"
        txt.backgroundColor = UIColor.whiteColor()
        txt.leftView = img
        txt.leftViewMode = .Always
        txt.delegate = self
        
        
        
        return txt
        
    }()

}

extension SHDiscoverSearchView: UITextFieldDelegate {
    func textFieldDidBeginEditing(textField: UITextField) {
        self.textField.snp_updateConstraints { (make) -> Void in
            make.trailing.equalTo(self).offset(-50)
        }
        
        UIView.animateWithDuration(0.25) { () -> Void in
            self.layoutIfNeeded()
        }
    }
}
